หลีกเล่ี ยงการตลาดใด ๆ หรื อโครงการอ่ื น ๆ ท่ี มี ลักษณะ ของความไม่ยุติธรรมหรื อหลอกลวง ปฏิบัติตามหลักการ ของความซ่ือสัตย์ ความจริงใจ และตรงไปตรงมาในการขาย ผลิตภัณฑ์ของบริษัท รวมถึงการโฆษณาหรือการทำ�โปรโมช่ั นของผลิตภัณฑ์เหล่าน้ัน 17.

Provides heat stabilization • Excellent balance of properties • Natural, black or custom colors Product Code - - - PX5430 B1 PX5435 B1 PX5440 B1 PX5450 B1 Reinforcement Type - - - Glass Glass Glass Glass Reinforcement % - % - 30 35 40 50 Specific Gravity 73°F (23°C) - ISO 1183 1.13 1.18 1.23 1.35 Tensile Strength Yield MPa ISO 527 102 105 113 130 Flexural Modulus 73°F (23°C) MPa ISO 178 6500 8000 9400 11,500 Notched Izod Impact 73°F (23°C) kJ/m2 ISO 180 9.4 9.3 11.0 12.0 Heat Deflection 264 psi °C ISO 75 152 152 153 154 Product Code - - - PP5120 B270-LO MFR g/10 min ISO 1133 12 Tensile Modulus MPa ISO 527 3320 Tensile Stress Yield MPa ISO 527 32 Tensile Elongation Yield % ISO 527 4.6 Tensile Elongation Break % ISO 527 17 Flexural Modulus MPa ISO 178 3000 Charpy Impact 73°F (23°C) kJ/m2 ISO 179/1eU 38 Heat Aging 150°C h VW 44045 700 hr VOC µg/g VDA 278 23.5 Fog µg/g VDA 278 30.5 Carbon Emissions µgC/g VDA 277 18 Odor Grade VDA 270 B3 3 10 Maxxam™ Filled & Reinforced A range of melt flows to process well in sheet extrusion, thermoforming, profile extrusion and blow molding operations

Buyer expressly warrants that employees, agents and subcontractors of Buyer shall not directly or indirectly (i) accept, promise, offer or provide any improper advantage to, or (ii) enter into an agreement (a) with any entity or person, including officials of a government or a government-controlled entity, or (b) relating to a product, which would constitute an offense or infringement of applicable Laws and Standards. 17.

Buyer expressly warrants that employees, agents and subcontractors of Buyer shall not directly or indirectly (i) accept, promise, offer or provide any improper advantage to, or (ii) enter into an agreement (a) with any entity or person, including officials of a government or a government-controlled entity, or (b) relating to a product, which would constitute an offense or infringement of applicable Laws and Standards. 17.

FX +4.6% FX -1.5% Total Avient +3.1% Note: Regional Sales Percentages exclude impact of foreign exchange Q2 2024 SEGMENT PERFORMANCE (COLOR, ADDITIVES & INKS) $525 $542 $94 $108 19.9% (in millions) (in millions) 10 17.9% +200 bps * Adjusted EBITDA Margin % • Organic sales growth in all regions led by Americas • Raw material deflation combined with cost reduction actions drove EBITDA margin expansion + 3% (+5% excluding FX) + 15% (+17% excluding FX) Q2 2024 SEGMENT PERFORMANCE (SPECIALTY ENGINEERED MATERIALS) $301 $308 $60 $64 20.6% (in millions) (in millions) 11 19.8% +80 bps * Adjusted EBITDA Margin % • Sales growth in consumer, healthcare and building & construction end markets offset by weaker demand in telecommunications • EBITDA margin expansion driven by positive end market mix as well as raw material deflation + 2% (+4% excluding FX) + 7% (+8% excluding FX) 2024 G U IDA N CE FY 2024 GUIDANCE Previous (May 7) Current Adjusted EBITDA $510 to $535 million $515 to $540 million Adjusted EPS $2.50 to $2.65 $2.55 to $2.70 Interest Expense $105 million $105 million Adjusted Effective Tax Rate 23% to 25% 23% to 25% Capital Expenditures ~$140 million ~$140 million 13 Q3 2024: Adjusted EPS of $0.62 14 Highlights • Provides performance updates on 2030 Sustainability Goals • Reduced company’s Scope 1 & 2 GHG emissions by 48% since 2019 • Highlights ESG performance ratings, certifications, and awards, including recent upgrades by Ecovadis to Gold and CDP to A- • Reflects Great Place to Work® culture focused on health, safety and employee engagement 2023 SUSTAINABILITY REPORT 14 Sustainability for a Better Tomorrow 2023 SUSTAINABILITY REPORT 15 • Investor Day to be held December 4, 2024 in New York, NY • The focus will be to do a deep dive on the Company’s strategy • Further details to be communicated 2024 AVIENT INVESTOR DAY AP P EN D IX 18 Performance Additives 15% Pigments TiO2 Dyestuffs Polyethylene 10%Nylon Polypropylene Styrenic Block Copolymer Other Raw Materials 38% ~40% hydrocarbon based (Grey shaded materials are hydrocarbon based, includes portion of “Other Raw Materials”) Non-hydrocarbon based materials RAW MATERIAL BASKET SEGMENT DATA U.S. & Canada 41% 2023 SEGMENT, END MARKET AND GEOGRAPHY GEOGRAPHY REVENUESEGMENT FINANCIALS 19% 23%Industrial Building and END MARKET REVENUE $2,007M $358M $1,138M $224M Sales EBITDA Specialty Engineered Materials Color Additives and Inks $502M$3,143M (1) 20 (1) Total company sales and adjusted EBITDA of $3,143M and $502M, respectively, include intercompany sales eliminations and corporate costs 2023 REVENUE | $2 .0 B ILL ION 34% 37% 21% END MARKET REGION 21 34% 21% 15% Building & 1% Energy COLOR, ADDITIVES & INKS 2023 REVENUE | $1 .1 B ILL ION 52% 35% 22 6%Industrial 12% 10% Defense Building & END MARKET REGION SPECIALTY ENGINEERED MATERIALS 32% 26% Building & 6% 2% Defense 1% (18% of sales) 2023 AVIENT REGIONAL SALES 25% Building & (36% of sales)Transportation 22% Building & 12% 6% US & Canada (41% of sales) 59% 22% Building & LATAM (5% of sales) 23 BY END MARKET Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except for per share data) Senior management uses comparisons of adjusted net income from continuing operations attributable to Avient shareholders and diluted adjusted earnings per share (EPS) from continuing operations attributable to Avient shareholders, excluding special items, to assess performance and facilitate comparability of results.

Buyer expressly warrants that employees, agents and subcontractors of Buyer shall not directly or indirectly (i) accept, promise, offer or provide any improper advantage to, or (ii) enter into an agreement (a) with any entity or person, including officials of a government or a government-controlled entity, or (b) relating to a product, which would constitute an offense or infringement of applicable Laws and Standards. 17.

Buyer expressly warrants that employees, agents and subcontractors of Buyer shall not directly or indirectly (i) accept, promise, offer or provide any improper advantage to, or (ii) enter into an agreement (a) with any entity or person, including officials of a government or a government-controlled entity, or (b) relating to a Product, which would constitute an offense or infringement of Laws and Standards. 17.

Buyer expressly warrants that directors, officers, employees, agents and subcontractors of Buyer shall not directly or indirectly (i) accept, promise, offer or provide or agree to accept, promise, offer or provide, any advantage (ii) to, or enter into an agreement with (a) any entity or person, including officials of any government or any government-controlled entity or agency, or (b) relating to a product, which would constitute an offense or infringement of applicable Laws and Standards. 17.

Buyer expressly warrants that employees, agents and subcontractors of Buyer shall not directly or indirectly (i) accept, promise, offer or provide any improper advantage to, or (ii) enter into an agreement (a) with any entity or person, including officials of a government or a government-controlled entity, or (b) relating to a product, which would constitute an offense or infringement of applicable Laws and Standards. 17.

Additional Requirements: The Company’s directors and officers who are subject to the reporting and liability provisions of Section 16 of the Securities Exchange Act of 1934 or the restrictions applicable to “affiliates” under Rule 144 promulgated by the Securities and Exchange Commission will be informed of their status by the General Counsel and are reminded that additional policies and procedures are applicable to them. 17.